2 files changed, 38 insertions, 5 deletions
diff --git a/sonar-css-plugin/src/main/java/org/sonar/css/plugin/CssRules.java b/sonar-css-plugin/src/main/java/org/sonar/css/plugin/CssRules.java
index 9e3a3b2..fe625d5 100644
--- a/sonar-css-plugin/src/main/java/org/sonar/css/plugin/CssRules.java
+++ b/sonar-css-plugin/src/main/java/org/sonar/css/plugin/CssRules.java
@@ -24,6 +24,7 @@ import org.sonar.api.batch.rule.Checks;
 import org.sonar.api.rule.RuleKey;
 import org.sonar.css.plugin.rules.CommentNoEmpty;
 import org.sonar.css.plugin.rules.CssRule;
+import org.sonar.css.plugin.rules.KeyframeDeclarationNoImportant;
 import org.sonar.css.plugin.rules.NoEmptySource;
 import org.sonar.css.plugin.rules.ColorNoInvalidHex;
 import org.sonar.css.plugin.rules.StringNoNewline;
@@ -54,11 +55,12 @@ public class CssRules {
 
   public static List<Class> getRuleClasses() {
     return Collections.unmodifiableList(Arrays.asList(
-        ColorNoInvalidHex.class,
-        CommentNoEmpty.class,
-        NoEmptySource.class,
-        StringNoNewline.class,
-        UnitNoUnknown.class
+      ColorNoInvalidHex.class,
+      CommentNoEmpty.class,
+      KeyframeDeclarationNoImportant.class,
+      NoEmptySource.class,
+      StringNoNewline.class,
+      UnitNoUnknown.class
     ));
   }
 
diff --git a/sonar-css-plugin/src/main/java/org/sonar/css/plugin/rules/KeyframeDeclarationNoImportant.java b/sonar-css-plugin/src/main/java/org/sonar/css/plugin/rules/KeyframeDeclarationNoImportant.java
new file mode 100644
index 0000000..503f1ad
--- /dev/null
+++ b/sonar-css-plugin/src/main/java/org/sonar/css/plugin/rules/KeyframeDeclarationNoImportant.java
@@ -0,0 +1,31 @@
+/*
+ * SonarCSS
+ * Copyright (C) 2018-2018 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.css.plugin.rules;
+
+import org.sonar.check.Rule;
+
+@Rule(key = "S4655")
+public class KeyframeDeclarationNoImportant implements CssRule {
+
+  @Override
+  public String stylelintKey() {
+    return "keyframe-declaration-no-important";
+  }
+}